Method of and means for producing two box parts in alpha single operation



Dec. 1,1931. J. SCHMIEDEL 4 METHOD OF AND MEANS FOR PRODUCING TWO-BOXPARTS IN A SINGLE OPERATION Filed Dec. 16, 1929 J fimskw Patented Dec.1, 1931 UNITED STATES PATENT OFFICE JOHANNES SCHMIEDEL, 0F DRESDEN,GERMANY, ASSIGNOR TO UNTVERSELLE CIGARETTENMASCHINEN-FABRIK, J'. C.MULLER & 00., OF DRESDEN, GERMANY METHOD OF AND'MEANS FOR PRODUCINGTWU'iBOX PAIR-TS IN A SINGLE OPERATION Application filed December 16,1929, Serial No. I

It has been proposed to form box blanks by means of a forming block. Ihave already proposed to employ a forming block in the forming of boxblanks having neck inserts by applying the open neck strip to a sideedge of the box blank and forming the blank by means of the formingblock in a shaping channel.

It has now been ascertained that the use of a forming block permits ofproducing two box parts at the same time in one and the same apparatusby means of a single forming block i. e. in one working operation twobox parts with a neck insert, when, in accordance with the invention, aforming block of such dimensions is used that two box-parts can be.formed on it at one time. Various methods may be employed for formingthe two box parts at one time on this forming block.

Two parallel neck strips can be placed on the corresponding parallelside edges of the blanks and the forming core placed on the formingblock through such shaping channel and thereupon the junction with thesecond blank disposed in front of the second shaping channel is effectedby passing the forming block into'the second shaping channel, theshaping channels being preferably arranged parallel to one another orcoaxial, so that r the forming block has a reciprocating movement.

The forming block is preferably provided on the side walls about whichthe neck strip is wrapped with a surrounding projecting bar'or r'ibserving as an abutment for the neck strip.

414,470,-and in Germany December 24, 1928.

tion of my device' Fig. 2 a top plan view showing the location of theparallel neck strips and blanks relative to one another before theoperation; Fig. 3 is a perspective view of the two coupled box parts;Fig. 4 is a perspective view of the shaping core and Fig. 5 is adiagrammatic longitudinal section of another modification of my device.

As shown in 'Fig. 1 the device com rises a shaping channel 2 open on topand ottom and provided at its sides with shaping members 2a. The lowerend of said channel is extended horizontally to form a second shapingchannel 10 arranged at a right angle to the first named channel 2 andhaving also a shapin member 10a.

Movable through the lower part of channel 2 and through the secondchannel 10 is a plungerll borne in a sleeve 12 carrying fingers 13, saidsleeve also being movable independently of and coaxially with saidplunger 11. Movable through the channel 2 is also a plunger or die 8. 5denotes a forming block or core which is provided with an encirclingbead or rib 6 extending centrally around the side surfaces thereof.(Fig. 4) 'During the operation this block or core moves first throughthe channel 2 and then is forced into the channel 10.

My method is carried out as follows :open neck strips 1 are placed infront of the shaping channel 2 parallel to one another with their centreportions over the side edges 3 of the two blanks 4 which are disposed infront of an opening in the shaping channel 2 beneath the neck strips 1.v

The forming block 5 is now placed on the neck strips in such manner thatit is located with one side adjacent the sides 3. With the forming blockin position this rib lies in the gap at between the two neck strips.

The forming block is now depressed by a downwardly moving die 7, theprojecting ends of the neck strip are folded on the vertical side wallsof the forminblock, then the forming block presses on t e side edges 3of the blanks 4 and on the lower die 8. On the further downward movementin the shaping channel 2 the side walls of the box Fig. 1 is adiagrammatic longitudinal secpart being formed are folded against thefront wall of the forming block and against the neck strip, so that thebox blank is closed except for the side acted on by the die '7.

After the forming block has passed completely through the shapingchannel 2 the surface of the die 8 is flush with the bottom 9 of achannel 10. In this position the upper die 7 is retracted and a plunger11 now moves forward, which plunger is horizontally movable in thesleeve 12 which carries a folding finger 13. This. folding finger'isfirst pushed forwards with the sleeve 12 in order to bring the end 1' ofthe neck strip against the forming block. Then the plunger 11 movesforward and forces the forming block with the work thereon into thechannel 10, the ends 1" of the neck strip being first folded around theforming block by the projection 14, and the remaining sides 3' beingthen folded on the neck strip. The completed box blanks pass through thechannel 10 which may be heated in known manner in order to ensureeffective adhesion of the gummed portions, as of course gummed neckstrips are employed.

In the embodiment shown in Fig. 5 a forming block is used which may havethe same shape as that shown in Fig. 4. Around this forming block arepreviously laid the neck strips 1 and the forming block provided withthe neck strip is fed by means of a plunger 15 through a channel 16tothe point where the forming of the box parts commences.

At the end of the horizontal channel 16 is provided a vertical formingchannel 17 in front of which the box blank 4 is dis osed. The formingblock in position over the lank is pressed by the Vertical die 18,guided at 19, through the forming channel 17, the sides of the box blankbearing against the lower neck strip on the forming block.

When it leaves the forming channel 17 the forming block which nowcarries a completed box blank passes into a second horizontal channel 20into which it is pushed by a plunger 21. At the end of this channel 20is provided a vertical upwardly extending forming channel 22 in front ofthe inlet of which is disposed the second blank 4. By means of avertically movable die 23 guided at 24 the'forming block is pushed intothe forming channel 22, the second blank 4 with its sides which isbrought to the second neck strip carried by the forming block, so thatthe box structure shown in Fig. 3 is produced. This box is pushedthrough the forming channel 22 which again may be heated to ensureadhesion of the gummed portions.

Claims: 1. A method of producing box blanks having neck inserts in whicha previously gummed open neck insert strip is placed on one side edge ofthe box blank, consisting in disposing two parallel neck strips on thecorresponding parallel side edges of a blank and-introducing a formingcore resting on the neck strips adJacent the side edges into a shapingchannel in which the box parts are completed except for the side atwhich the feeding device acts on the forming block, whereupon thefeeding device is retracted and the remaining part of the box closed bymeans of folding fingers and by inserting it in a second shapingchannel.

2. A forming block for producing box blanks having neck inserts saidblock pro-- through said common channel, thereby effecting the foldingof the side edges of each box part and of the neck strips around threesides of said core, then forcing said blanks and core through a secondshaping channel and causing thereby the folding of the remaining, sideedge and. part of the strip around the fourth side of said core.

4. A method of producing two uniform box parts, consisting indisposing-two blanks parallel to one another in front of a commonshaping channel, then pressing a single form ing core against theopposite edges of said two blanks and thereby forcing the latter intosaid channel, whereby three sides edges of each box blank are folded,then forcing said blanks and core through a second shaping channel andthereby causing the folding of the fourth side of each box blank.

5. In a device for producing two box parts from box blanks in oneoperation, the combination with shaping channels of a single formingcore movable through said channels and adapted in cooperation with thelatter to fold the edges of said blanks to form said box parts.

6. In a device for producing two box parts from box blanks in oneoperation, two shaping channels arranged at an angle with one anotherand each having shaping members, a single forming core movable throughsaid channels and adapted while moving through the first channel, incooperation with the shaping members thereof, to fold three sides ofeach box blank and when movingthrough the second channel in cooperationwith the shaping member of the latter to fold the remaining side edge ofeach box blank to form the box parts.

7. A method of producing two uniform box parts in one operationcomprising the steps of disposing box blanks infront of shaping channelsand pressing a single forming block against said blanks thereby forcingthe latter into said channels to fold the edges of said blanks aboutsaid single forming core.

8. A method of producing two uniform box parts having neck inserts witha single forming block consisting in mounting said neck inserts on saidforming'block then disposing a box blank in front of a shaping channel,then pressing said forming core against said blank and thereby forcingthe latter through said channel to fold the side edges of said blankabout one of the neck inserts on said core, then disposing a second boxblank in front of a second channel and then pressing said forming coreagainst said second box blank thereby forcing the latter through saidsecond channel to fold the side edges of said blank about the other neckinsert on said core.

In testimony whereof I aflix my signature.

JOHANNES SCHMIEDEL.

